As filed with the Securities and Exchange Commission on March 23, 1998
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-K

              ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

     For the Fiscal Year ended December 31, 1997 Commission File No. 0-19341

                            BOK FINANCIAL CORPORATION

            Incorporated in the State I.R.S. Employer Identification
                            of Oklahoma No.73-1373454

                             Bank of Oklahoma Tower
                                  P.O. Box 2300
                              Tulsa, Oklahoma 74192

                         Registrant's Telephone Number,
                       Including Area Code (918) 588-6000

                 SECURITIES REGISTERED PURSUANT TO SECTION 12(b)
                               OF THE ACT: (NONE)

                 SECURITIES REGISTERED PURSUANT TO SECTION 12(g)
                                   OF THE ACT:
                        COMMON STOCK ($.00006 Par Value)

          Indicate  by check  mark  whether  the  Registrant  (1) has  filed all
     reports  required  to be filed  by  Section  13 or 15(d) of the  Securities
     Exchange  Act of 1934 during the  preceding  12 months (or for such shorter
     period that the Registrant was required to file such reports),  and (2) has
     been subject to such filing requirements for the past 90 days. Yes X No

          Indicate by check mark if disclosure of delinquent  filers pursuant to
     Item  405 of  Regulation  S-X is not  contained  herein,  and  will  not be
     contained,  to the best of Registrant's  knowledge,  in definitive proxy or
     information  statements  incorporated by reference in Part III of this Form
     10-K or any amendment to this Form 10-K. [ ]

          State  the  aggregate  market  value  of  the  voting  stock  held  by
     non-affiliates of the Registrant: $63,328,413 as of February 28, 1998.

          Indicate the number of shares  outstanding of each of the Registrant's
     classes of common  stock,  as of the latest  practicable  date:  21,930,457
     shares of common stock ($.00006 par value) as of February 28, 1998.

     List hereunder the following documents if incorporated by reference and the
     part of Form 10-K in which the document is incorporated:
          Part I - Annual Report to Shareholders  For Fiscal Year Ended December
               31, 1997 (designated portions only)
          Part II - Annual Report to Shareholders For Fiscal Year Ended December
               31, 1997 (designated portions only)
          Part III  -  Proxy   Statement  for  Annual  Meeting  of  Shareholders
               scheduled for April 28, 1998 (designated portions only)
          Part IV - Annual Report to Shareholders For Fiscal Year Ended December
               31, 1997 (designated portions only)

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2



                            BOK FINANCIAL CORPORATION
                             FORM 10-K ANNUAL REPORT
                                      INDEX


ITEM                                                                           
                                                                           PAGE

                                                PART I

1.  Business                                                                 3

2.  Properties                                                               8

3.  Legal Proceedings                                                        8

4.  Submission of Matters to a Vote of Security Holders                      8


                                       PART II

5.  Market for Registrant's Common Equity and Related Stockholder Matters    8

6.  Selected Financial Data                                                  9

7.  Management's Discussion and Analysis of Financial Condition and          9
    Results of Operations

7A. Quantitative and Qualitative Disclosures About Market Risk               9

8.  Financial Statements and Supplementary Data                              9

9.  Changes in and Disagreements with Accountants on Accounting and          9
    Financial Disclosure


                                      PART III

10. Directors and Executive Officers of the Registrant                       9

11. Executive Compensation                                                   9

12. Security Ownership of Certain Beneficial Owners and Management           9

13. Certain Relationships and Related Transactions                           9


                                       PART IV

14. Exhibits, Financial Statement Schedules and Reports on Form 8-K      10-14

    Signatures                                                              15


3



                                     PART I
       ITEM 1 - BUSINESS

                         General Development of Business

       BOK Financial  Corporation ("BOK  Financial") was incorporated  under the
       laws of the State of Oklahoma on October 24, 1990. Active operations as a
       bank holding  company  commenced on June 7, 1991 with the  acquisition of
       the preferred stock ("BOk Preferred Stock") of Bank of Oklahoma, National
       Association  ("BOk")  from  the  Federal  Deposit  Insurance  Corporation
       ("FDIC") and the conversion of the BOk Preferred Stock into 99.99% of the
       common stock of BOk. BOK Financial is regulated by the Board of Governors
       of the Federal Reserve System pursuant to the Bank Holding Company Act of
       1956, as amended ("BHCA").

       BOK Financial operates primarily through BOk, BOk's subsidiaries, Bank of
       Texas, National Association ("BOT") (formerly First National Bank of Park
       Cities and First Texas Bank,  both of which were acquired during 1997 and
       merged on January  1, 1998,  and Bank of Texas  Trust  Company,  National
       Association,  formerly Alliance Trust Company, National Association), and
       Bank of Arkansas, National Association ("BOA") (formerly Citizens Bank of
       Northwest  Arkansas,  National  Association).  The  existing  and  future
       activities of BOK Financial and its subsidiaries are limited by the BHCA,
       which  prohibits a bank  holding  company  from  engaging in any business
       other than banking,  managing or  controlling  banks,  and furnishing and
       performing certain bank-related services and activities.

       Shares disclosed in the following  transactions  have not been restated 
       for subsequent stock dividends.

       On June 7, 1991,  BOK Financial  paid $60.75  million to the FDIC for the
       BOk Preferred  Stock. To finance this  acquisition,  BOK Financial issued
       preferred  stock  totaling  $15.0  million  at $6.00 per share and common
       stock  ("Common  Stock")  totaling  $46.0  million  at $5.75 per share to
       George B.  Kaiser  ("Kaiser"),  BOK  Financial's  principal  shareholder.
       Kaiser  purchased an additional  $10.0  million of BOK  Financial  Common
       Stock at $5.75 per share, and BOK Financial contributed the $10.0 million
       to BOk as  additional  capital.  Per share  amounts  reflect a  1-for-100
       reverse stock split effective December 17, 1991 ("reverse stock split").

       Following a bidding process conducted by the Resolution Trust Corporation
       ("RTC"),  BOK Financial,  through the mortgage banking subsidiary of BOk,
       BancOklahoma   Mortgage  Corp.  ("BOMC"),   acquired  on  June  10,  1991
       approximately $1.0 billion of mortgage servicing rights and certain other
       assets of Maxim  Mortgage  Corporation  ("Maxim").  Maxim was  formerly a
       subsidiary  of Sooner  Federal  Savings and Loan  Association,  which had
       failed and had been placed under the control of the RTC.

       Also  following a bidding  process by the RTC, BOK Financial  acquired on
       August 9, 1991 certain assets and assumed certain liabilities,  primarily
       deposits,  of eight  branches  of  Continental  Federal  Savings and Loan
       Association of Oklahoma City, Oklahoma. BOK Financial assumed deposits of
       approximately  $214.5 million and paid the RTC a premium of $4.1 million.
       Kaiser  acquired an additional  $20.0 million of BOK  Financial's  Common
       Stock at $5.75 per share (after effect of the reverse  stock split),  and
       BOK Financial  contributed  the $20.0  million to BOk to  facilitate  the
       purchase.

       On March 27, 1992,  BOA acquired  certain assets and assumed the deposits
       and  certain  obligations  of two  branches  of the failed  Home  Federal
       Savings & Loan Association from the RTC for $1.1 million.

       On July 16,  1992,  Bank of  Oklahoma,  N.A.,  South,  an  unconsolidated
       banking subsidiary, was merged into BOk.

       On November 13, 1992, BOK Financial purchased Southwest  Trustcorp,  Inc.
       and its  subsidiary,  The Trust  Company of Oklahoma,  Oklahoma  City, in
       exchange for 400,000 shares of Common Stock valued at $4.6 million.

       On December 31, 1992, BOK Financial  acquired  certain assets and assumed
       $502.9  million of deposits and other  liabilities  of 19 branches of the
       Sooner  Division  of First  Gibraltar  Bank,  FSB of Irving,  Texas for a
       purchase price of $16.5 million.

       On May 7, 1993, BOK Financial issued 343,295 common shares valued at $6.9
       million and paid $3.9 million to acquire Sand  Springs  Bancshares,  Inc.
       and its subsidiary, Sand Springs State Bank.

       Also on May 7, 1993,  BOK  Financial  issued  1,183,691  common shares to
       acquire Brookside  Bancshares,  Inc. and its subsidiary,  Brookside State
       Bank, in a pooling-of-interests transaction. Financial information of BOK
       Financial   for  1992  and  1991  has  been   restated  to  reflect  this
       acquisition.

       On October 9, 1993, BOK Financial acquired certain assets and assumed the
       deposits and certain  obligations of two branches of the failed Heartland
       Federal Savings & Loan Association from the FDIC for $5.1 million.

       On May 2, 1994, BOK Financial acquired Plaza National Bank, Bartlesville,
       Oklahoma for $11.7 million.

       On June 13, 1994,  BOK Financial  acquired Texas Commerce Trust Company -
       Sherman,  National  Association,  Sherman,  Texas, a national association
       limited to trust powers only, for $6.1 million.
4

       On October 7, 1994, BOK Financial  acquired Northwest Bank of Enid, Enid,
       Oklahoma for $8.2 million.

       On November 14, 1994,  BOK Financial  issued  1,380,017  common shares to
       acquire Citizens Holding Company and its  subsidiaries,  Citizens Bank of
       Muskogee   and   Citizens    Bank   of   Northwest    Arkansas,    in   a
       pooling-of-interests. Financial information of BOK Financial for 1993 and
       1992 has been restated to reflect this acquisition.

       On February 12, 1997, BOK Financial acquired Park Cities Bancshares, Inc.
       and its subsidiary,  First National Bank of Park Cities, in Dallas, Texas
       for $50.9 million.

       On March 4, 1997,  BOK Financial  acquired First  TexCorp.,  Inc. and its
       subsidiary, First Texas Bank, in Dallas, Texas for $39.3 million.

       On January 1, 1998,  First  National  Bank of Park Cities and First Texas
       Bank were merged  under the name of Bank of Texas,  National  Association
       and Alliance Trust Company,  National  Association was transferred to BOT
       and  its  name  changed  to  Bank  of  Texas  Trust   Company,   National
       Association.

       Developments  relating  to  individual  aspects  of the  business  of BOK
       Financial are described  under  "Narrative  Description  of Business" and
       "Services Offered" on page 4 of this report. Additional discussion of BOK
       Financial's  activities  during  the  current  year  is  incorporated  by
       reference  to  "Management's   Assessment  of  Operations  and  Financial
       Condition"  (pages  6 - 18) in BOK  Financial's  1997  Annual  Report  to
       Shareholders.    Additional   information   regarding   BOK   Financial's
       acquisitions  is  incorporated  by  reference  to  Note  2 of  "Notes  to
       Consolidated  Financial  Statements"  (page 28 ) in BOK Financial's  1997
       Annual Report to Shareholders.

                        Narrative Description of Business

       BOK Financial is a bank holding company,  and as such, its activities are
       limited  by the  BHCA  to  banking,  certain  bank-related  services  and
       activities,  and managing or controlling  banks. BOK Financial's  banking
       and bank-related  activities are primarily performed through BOk, BOT and
       BOA.  Other  significant  operating   subsidiaries  include  BOK  Capital
       Services Corporation,  which provides leasing and mezzanine financing and
       Alliance  Securities   Corporation  which  is  authorized  to  underwrite
       municipal  revenue bonds,  asset-backed  securities and commercial paper.
       Other nonbank subsidiary  operations are not significant.  As of December
       31,  1997,  BOK  Financial  and  its  subsidiaries  had  2,318  full-time
       equivalent employees.  Following is a description of the more significant
       services  offered by BOK Financial  and the  competitive  and  regulatory
       environments in which it operates.

                                Services Offered

       Commercial Banking Services

       BOK  Financial,  through  BOk,  BOT and  BOA,  provides  a wide  range of
       financial  services to commercial  and  industrial  customers,  including
       depository, lending and other financial services such as cash management,
       leasing and  international  collections.  The loan portfolio is comprised
       primarily  of real  estate and  commercial  loans.  The  commercial  loan
       portfolio is diversified  and  distributed  among various  commercial and
       industrial customers, including energy-related,  manufacturing, trade and
       service industries.

       Correspondent Banking Services

       BOK  Financial  provides a broad  range of  financial  services to banks,
       savings and loans,  credit  unions and other  financial  institutions  in
       Oklahoma  and  surrounding  states.  BOK  Financial  works  closely  with
       community  financial  institutions,  assisting  them  in  satisfying  the
       demands  of  their   customers  and  trade  areas  by  engaging  in  loan
       participations and providing other financial services.

       Consumer Banking Services

       At December 31, 1997, BOk had 65 banking locations,  with 45 locations in
       the Tulsa and  Oklahoma  City  areas.  BOT had 4  offices  in Dallas  and
       another  trust  office in  Sherman,  Texas,  and BOA had 4  locations  in
       northwest   Arkansas.   Services   offered  include   deposit   accounts,
       installment loans,  student loans,  personal lines of
       credit,  debit cards,  an automated  24-hour  telephone loan  application
       service,  a 24-hour  telephone branch and telephone and personal computer
       based bill paying  services.  The  BancOklahoma  Investment  Center makes
       available,  through representatives in most BOk branches, a full range of
       mutual  funds,  annuities  and  securities.  TransFund,  BOk's network of
       automated  teller  machines,  consists of 782 locations  across Oklahoma,
       Arkansas, southwest Missouri, northern Texas and southern Kansas.

       Investment and Money Market Activities

       BOk provides securities brokerage, and trading services for corporations,
       governmental  units,   individual   customers  and  correspondent  banks.
       Securities  include  money  market   instruments,   U.S.  Government  and
       municipal bonds, corporate stocks
5

                                         and bonds, and mutual funds. The public
       finance  department   provides   bank-eligible   underwriting   financial
       advisory,  private placement and term-financing services for governmental
       and corporate entities. BOK Financial provides a broad range of financial
       services outside those traditionally  associated with banking through its
       subsidiaries  Alliance  Securities Corp.,  which is authorized to provide
       financial  advisory  services  to  both  public  and  corporate  sectors,
       underwriting of municipal revenue bonds,  mortgage backed debt,  consumer
       receivables,  and commercial  paper; and BOK Capital Services Corp. which
       provides leasing and mezzanine financing.


       Mortgage Banking

       BOk through its Mortgage Division (formerly  BancOklahoma Mortgage Corp.)
       offers a full array of mortgage options from federally sponsored programs
       to "jumbo loans" on higher priced houses.  BOk is the largest  originator
       of  mortgage  loans  in  Oklahoma  and  has  a  servicing   portfolio  of
       approximately $7.0 billion, including $216 million serviced for BOk.

       Trust and Asset Management Services

       BOK Financial provides a wide range of trust services through BOk's Trust
       Division (formerly BancOklahoma Trust Company) in Oklahoma and BOT's Bank
       of Texas Trust Company,  N.A. in Texas (formerly  Alliance Trust Company,
       N.A.)   Individual   financial  trust  services  include  personal  trust
       management,  administration  of  estates  and  management  of  individual
       investment and custodial  accounts.  For corporate clients,  the services
       include  management,  administration  and recordkeeping of pension plans,
       thrift  plans,   401(k)  plans  and  master  trust  plans,   including  a
       state-of-the-art system for employee benefit plan recordkeeping.  The BOk
       trust  division also serves as transfer agent and registrar for corporate
       securities, paying agent for municipalities and governmental agencies and
       indenture  trustee of bond  issues.  The BOK Trust Division  serves as an
       investment  advisor  to the  American  Performance  Funds,  a  family  of
       proprietary mutual funds distributed by the Winsbury Company of Columbus,
       Ohio.  At December 31, 1997,  trust  subsidiaries  were  responsible  for
       approximately $11.1 billion in assets.

                               Foreign Operations

       BOK Financial  does not engage in operations  in foreign  countries,  nor
       does it lend to foreign governments.

                                   Competition

       The banking  industry in Oklahoma is highly  competitive.  BOK  Financial
       competes  with  other  banks in  obtaining  deposits,  making  loans  and
       providing additional services related to banking. There are approximately
       320 banks located in Oklahoma,  of which  approximately 38 are located in
       the Tulsa County and surrounding  metropolitan  area and approximately 53
       are located in the Oklahoma County and surrounding metropolitan area. BOK
       Financial  is  also in  competition  with  other  businesses  engaged  in
       extending   credit  or   accepting   deposits,   such  as  major   retail
       establishments,  major brokerage  firms,  savings and loan  associations,
       credit  unions,  finance  companies,  small  loan  companies,   insurance
       companies and loan  production  offices of major banks located within and
       outside Oklahoma.

       Limited   branch   banking  as  permitted   in  Oklahoma  is   increasing
       competition.  Generally,  a bank may  establish  two new  branch  offices
       within the town or city where the bank is located or in nearby  areas not
       already served by a bank or branch,  and may acquire an unlimited  number
       of  existing  banks and  convert  them and  their  branches  into  branch
       offices.  Within its primary  markets,  BOk has 23 locations in the Tulsa
       area and 22  locations  in the Oklahoma  City area,  the state's  largest
       financial  markets.  Subject to regulatory  approval,  BOk is considering
       various  locations for additional  facilities.  Like BOk, other banks are
       taking  advantage  of the bank  branching  laws to  establish  additional
       facilities.  These  additional  banking  offices are  further  increasing
       competition.  Limited  branch  banking is, on the other hand,  permitting
       banks to compete more  effectively  with  savings and loan  associations,
       credit unions and other financial institutions that may establish offices
       more  freely  than  banks,  some of which are not  subject to  comparable
       regulatory restrictions on their activities.

       Oklahoma  also  permits  the  acquisition  of  an  unlimited   number  of
       wholly-owned bank subsidiaries so long as aggregate  deposits at the time
       of  acquisition in a multibank  holding  company do not exceed 15% of all
       deposits  in  Oklahoma  financial  institutions  insured  by the  federal
       government,  exclusive  of credit  union  deposits.  Based on the  latest
       statistical  data  available (as of June 30, 1997),  BOK Financial  could
       acquire additional bank subsidiaries so long as the aggregate deposits of
       all  Oklahoma  subsidiaries  do not exceed  approximately  $5.2  billion.
       Deposits  of BOk were  $3.2  billion  and $3.3  billion  at June 30,  and
       December 31, 1997, respectively.

       Oklahoma  also permits  out-of-state  bank  holding  companies to acquire
       banks and bank  holding  companies  located in the state and,  subject to
       certain  limitations,  make  additional  acquisitions  within  the state.
       During  the  last  few  years  the  Oklahoma  banking  industry  has been
       consolidated   into   fewer  but   larger   banks.   During   1997,   two
       "super-regional"  holding companies completed  acquisitions of the second
       and third  largest  banks in Oklahoma.  The  consolidation  over the past
       several  years has brought  about a highly  competitive  environment,  in
       which many  customers  have access to  national  and  regional  financial
       institutions for many products and services.

       On September 29, 1994, the Riegle-Neal  Interstate  Banking and Branching
       Efficiency Act of 1994  ("Riegle-Neal")  was signed into law. In summary,
       commencing one year after passage, qualifying bank holding companies were
       permitted  to  acquire  
6

                                   banks  in any  state.  As of  June  1,  1997,
       qualifying  banks were able to engage in interstate  branching by merging
       banks in different states.  States " opt-out" of interstate  branching by
       enacting  specific  legislation  prior to June 1,  1997,  in  which  case
       out-of-state banks would generally not be able to branch into that state,
       and banks  headquartered  in that state would not be  permitted to branch
       into other states.  The law imposes a 10%  nationwide
       deposit cap and a 30% state deposit cap;  however,  the states' authority
       is preserved to impose a lower,  nondiscriminatory  deposit cap. Oklahoma
       elected  to  "opt-in"  to  interstate  branching  effective  May 1997 and
       established a 12.25% deposit cap which was subsequently increased to 15%.
       It is  anticipated  that the total number of Oklahoma  banks may decrease
       and national and regional bank  presence in the state may increase.  Over
       the near-term,  these changes are expected to increase competition with a
       greater number of products and services available to Oklahoma  customers.
       Over the long-term,  the number of competitors could decrease,  depending
       on  the  extent  of  consolidations  nationwide,  but  competition  could
       continue to increase as a result of the remaining institutions needing to
       be stronger,  more innovative and more aggressive to retain a significant
       presence in a consolidated environment.

       Additional  legislation,  judicial and administrative  decisions also may
       affect the  ability  of banks to compete  with each other as well as with
       other  businesses.  These  statutes  and  decisions  may tend to make the
       operations of various  financial  institutions  more similar and increase
       competition  among banks and other  financial  institutions  or limit the
       ability of banks to compete with other businesses.  Management  currently
       cannot  predict  whether and, if so, when any such changes might occur or
       the impact any such changes  would have upon the income or  operations of
       BOK Financial or its subsidiaries,  or upon the Oklahoma regional banking
       environment.

                           Supervision and Regulation

       Bank holding  companies and banks are  extensively  regulated  under both
       federal  and state  law.  The  following  information,  to the  extent it
       describes  statutory  or  regulatory  provisions,  is  qualified  in  its
       entirety  by  reference  to  the  particular   statutory  and  regulatory
       provisions.  It is not possible to predict the changes,  if any, that may
       be made to existing banking laws and regulations or whether such changes,
       if made,  would have a  materially  adverse  effect on the  business  and
       prospects of BOK Financial, BOk, BOT and BOA.

       BOK Financial

       As a bank holding  company,  BOK Financial is subject to regulation under
       the BHCA and to  supervision  by the Board of  Governors  of the  Federal
       Reserve  System (the "Reserve  Board").  Under the BHCA, BOK Financial is
       required to file with the Reserve  Board an annual  report and such other
       additional  information  as the Reserve  Board may  require.  The Reserve
       Board may also make examinations of BOK Financial and its subsidiaries.

       The BHCA  requires  the prior  approval of the Reserve  Board in any case
       where a bank  holding  company  proposes to acquire  control of more than
       five percent of the voting shares of any bank, unless it already controls
       a majority of such voting  shares.  Additionally,  approval  must also be
       obtained before a bank holding  company may acquire all or  substantially
       all of the assets of another  bank or before it may merge or  consolidate
       with another bank holding  company.  The BHCA further  provides  that the
       Reserve  Board  shall  not  approve  any  such  acquisition,   merger  or
       consolidation that will substantially lessen competition,  tend to create
       a  monopoly  or  be  in   restraint   of  trade,   unless  it  finds  the
       anti-competitive   effects  of  the  proposed   transaction  are  clearly
       outweighed  in  the  public  interest  by  the  probable  effect  of  the
       transaction in meeting the  convenience  and needs of the community to be
       served.

       The BHCA also prohibits a bank holding company,  with certain exceptions,
       from acquiring more than five percent of the voting shares of any company
       that is not a bank and from  engaging in any business  other than banking
       or managing or  controlling  banks.  Under the BHCA, the Reserve Board is
       authorized to approve the  ownership of shares by a bank holding  company
       in any company whose activities the Reserve Board has determined to be so
       closely related to banking or to managing or controlling banks as to be a
       proper incident thereto. In making such determinations, the Reserve Board
       weighs the  Community  Reinvestment  Act  activities  of the bank holding
       company  and  the  expected  benefit  to  the  public,  such  as  greater
       convenience,  increased  competition or gains in efficiency,  against the
       possible  adverse  effects,  such as undue  concentration  of  resources,
       decreased or unfair competition, conflicts of interest or unsound banking
       practices.  The Reserve Board has by regulation  determined  that certain
       activities are closely related to banking within the meaning of the BHCA.
       These activities  include operating a mortgage company,  finance company,
       credit  card  company  or  factoring  company;  performing  certain  data
       processing  operations;  servicing loans and other  extensions of credit;
       providing  investment and financial advice;  acting as an insurance agent
       for  certain  types of  credit-related  insurance;  owning and  operating
       savings  and  loan  associations;  and  leasing  personal  property  on a
       full-payout, nonoperating basis.

       A bank holding company and its subsidiaries are further  prohibited under
       the BHCA from engaging in certain tie-in  arrangements in connection with
       the provision of any credit, property or services.  Thus, a subsidiary of
       a bank holding  
7

                       company may not extend  credit,  lease or sell  property,
       furnish  any  services  or  fix  or  vary  the  consideration  for  these
       activities on the condition that (1) the customer  obtain or provide some
       additional  credit,  property  or  services  from or to the bank  holding
       company or any subsidiary thereof or (2) the customer may not obtain some
       other  credit,  property or  services  from a  competitor,  except to the
       extent  reasonable  conditions  are  imposed to insure the  soundness  of
       credit extended.

       The  Federal  Deposit  Insurance  Corporation  Improvement  Act  of  1991
       established five capital rating tiers ranging from "well  capitalized" to
       "critically  undercapitalized".  A financial institution is considered to
       be well capitalized if its Leverage,  Tier 1 and Total Capital ratios are
       at 5%, 6% and 10%, respectively. Any institution experiencing significant
       growth or  acquiring  other  institutions  or  branches  is  expected  to
       maintain capital ratios above the well capitalized level. At December 31,
       1997,  BOK  Financial's  Leverage,  Tier 1 and Total Capital  ratios were
       6.81%, 9.39% and 14.54%, respectively.

       Bank Subsidiaries

       BOk, BOT and BOA are national banking associations and are subject to the
       National Banking Act and other federal statutes governing national banks.
       Under  federal  law,  the  Office  of the  Comptroller  of  the  Currency
       ("Comptroller")  charters,  regulates and serves as the primary regulator
       of national  banks.  In addition,  the  Comptroller  must approve certain
       corporate  or  structural  changes,  including an increase or decrease in
       capitalization,  payment  of  dividends,  change  of place  of  business,
       establishment of a branch and  establishment of an operating  subsidiary.
       The Comptroller  performs its functions  through  national bank examiners
       who provide the Comptroller with information  concerning the soundness of
       a national bank, the quality of management and directors,  and compliance
       with applicable  laws,  rules and  regulations.  The National Banking Act
       authorizes  the  Comptroller  to examine every  national bank as often as
       necessary.    Although   the   Comptroller   has   primary    supervisory
       responsibility  for  national  banks,  such banks must also  comply  with
       Reserve  Board rules and  regulations  as members of the Federal  Reserve
       System.

       BOA is also subject to certain  consumer-protection  laws incorporated in
       the Arkansas  Constitution,  which, among other  restrictions,  limit the
       maximum  interest rate on general loans to five percent above the Federal
       Reserve  Discount  Rate. The rate on consumer loans is five percent above
       the discount rate or seventeen percent, whichever is lower.

       BOk,  BOT and BOA are insured by the FDIC and are required to pay certain
       fees  and  premiums  to the  Bank  Insurance  Fund  ("BIF").  The BIF has
       implemented a risk-related  insurance system for determining  premiums to
       be paid by a bank.  Each bank is  placed  in one of nine risk  categories
       based  on  its  level  of  capital  and   supervisory   rating  with  the
       well-capitalized  banks  with the  highest  supervisory  rating  paying a
       premium of 0.00% of deposits and the  critically  undercapitalized  banks
       paying  up  to  0.27%  of  deposits.   Also,  approximately  19%  of  BOK
       Financial's  total  deposits at December 31, 1997 were  acquired  through
       Oakar  transactions  and are  insured  through  the  Savings  Association
       Insurance  Fund  ("SAIF").  The Deposit  Insurance  Funds Act of 1996 was
       enacted  on  September  30,  1996,  which   recapitalized  the  SAIF  and
       implemented a risk-related  insurance  system identical to the BIF system
       discussed  above.  In addition,  the Deposit  Insurance  Fund Act of 1996
       implemented  an  additional  assessment  on BIF and  SAIF  deposits,  the
       Financing  Corporation  ("FICO") Quarterly Payment,  which is not tied to
       the BIF risk  classification.  The FICO BIF annual rate at  December  31,
       1997 was 1.256 basis  points and the FICO SAIF annual rate was 6.28 basis
       points.

       Applicable  federal  statutes and regulations  require  national banks to
       meet certain leverage and risk-based  capital  requirements.  At December
       31, 1997, BOk's,  BOT's and BOA's leverage and risk-based  capital ratios
       were well above the required minimum ratios.

8

                   Governmental Policies and Economic Factors

       The  operations  of BOK Financial  and its  subsidiaries  are affected by
       legislative changes and by the policies of various regulatory authorities
       and,  in  particular,  the  credit  policies  of the  Reserve  Board.  An
       important  function of the  Reserve  Board is to  regulate  the  national
       supply of bank credit.  Among the  instruments of monetary policy used by
       the Reserve Board to implement its objectives are: open market operations
       in U.S.  Government  securities;  changes  in the  discount  rate on bank
       borrowings;  and changes in reserve  requirements  on bank deposits.  The
       effect of such policies in the future on the business and earnings of BOK
       Financial and its subsidiaries cannot be predicted with certainty.

       ITEM 2 - PROPERTIES

       BOK  Financial,  through  BOk,  BOk's  subsidiaries,  BOT and  BOA,  owns
       improved  real  estate  that  was  carried  at  $43.0  million,   net  of
       depreciation  and  amortization,  as of December 31, 1997.  BOK Financial
       conducts  its  operations  through a total of 65 banking and 4 nonbanking
       locations in Oklahoma,  4 banking locations in Arkansas and 4 banking and
       2 nonbanking locations in Texas as of December 31, 1997. BOk's facilities
       are suitable for their respective uses and present needs.

       The  information  set forth in Notes 6 and 13 of  "Notes to  Consolidated
       Financial  Statements" (pages 32 and 38, respectively) of BOK Financial's
       1997 Annual Report to Shareholders provides further discussion related to
       properties and is incorporated herein by reference.


       ITEM 3 - LEGAL PROCEEDINGS

       The information set forth in Note 13 of "Notes to Consolidated  Financial
       Statements"   (page  38)  of  BOK  Financial's   1997  Annual  Report  to
       Shareholders is incorporated herein by reference.


       ITEM 4 - SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

       No matters  were  submitted  to a vote of security  holders,  through the
       solicitation  of proxies or  otherwise,  during  the three  months  ended
       December 31, 1997.


                                     PART II

       ITEM 5 - MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER
                MATTERS

       BOK Financial's $.00006 par value common stock is traded over-the-counter
       and  is  reported  on  the  facilities  of the  National  Association  of
       Securities Dealers Automated Quotation system ("NASDAQ"), with the symbol
       BOKF. At December 31, 1997, common  shareholders of record numbered 1,227
       with 21,909,370 shares outstanding.

       During 1997, BOK Financial declared a 3% stock dividend in respect of its
       Common Stock payable in shares of Common Stock.  The dividend was payable
       on November 26, 1997 to  shareholders of record on November 17, 1997. BOK
       Financial's quarterly market information follows:

                    First          Second          Third          Fourth     
                --------------- -------------- -------------- ---------------
       1997:                                                                 
         Low        $27.75          $29.25          $32.75        $38.81     
         High        31.50           36.00           40.50         44.00     
                                                                             
       1996:                                                                 
         Low        $19.25          $20.00          $21.25        $23.25     
         High        23.25           22.75           23.75         28.00     
       
       On February 25, 1998, BOK Financial announced that its board of directors
       approved a common  stock  repurchase  program to  purchase  up to 200,000
       shares.  The purchases will be made from  time-to-time in accordance with
       SEC Rule 10(b)18 transactions.

       The  information  set forth under the  captions  "Table 1 -  Consolidated
       Selected  Financial  Data"  (page  5),  "Table  6  -  Selected  Quarterly
       Financial Data" (page 12) and Note 15 of "Notes to Consolidated Financial
       Statements"   (page  39)  of  BOK  Financial's   1997  Annual  Report  to
       Shareholders is incorporated herein by reference.

9

       ITEM 6 - SELECTED FINANCIAL DATA

       The  information  set forth  under the  caption  "Table 1 -  Consolidated
       Selected  Financial Data" (page 5) of BOK Financial's  1997 Annual Report
       to Shareholders is incorporated herein by reference.


       ITEM 7 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND 
                RESULTS OF OPERATIONS

       The information set forth under the captions "Management's  Assessment of
       Operations and Financial  Condition"  (pages 6 - 18),  "Annual  Financial
       Summary - Unaudited"  (pages 44 - 45) and "Quarterly  Financial Summary -
       Unaudited"  (pages  46 - 47) of BOK  Financial's  1997  Annual  Report to
       Shareholders is incorporated herein by reference.

       ITEM 7A - QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

       The  information  set forth under the caption "Market Risk" (pages 17-18)
       of BOK  Financial's  1997 Annual Report to  Shareholders  is incorporated
       herein by reference.

       ITEM 8 - FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

       The  supplementary  data  regarding  quarterly  results of operations set
       forth under the caption  "Table 6 - Selected  Quarterly  Financial  Data"
       (page  12) of BOK  Financial's  1997  Annual  Report to  Shareholders  is
       incorporated herein by reference.


       ITEM 9 - CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND 
                FINANCIAL DISCLOSURE

       None.

                                    PART III

       ITEM 10 - DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

       The information set forth under the captions  "Election of Directors" and
       "Executive  Compensation"  in BOK Financial's 1997 Annual Proxy Statement
       for its  Annual  Meeting of  Shareholders  scheduled  for April 28,  1998
       ("1997 Annual Proxy Statement") is incorporated herein by reference.


       ITEM 11 - EXECUTIVE COMPENSATION

       The information set forth under the caption  "Executive  Compensation" in
       BOK Financial's  1997 Annual Proxy  Statement is  incorporated  herein by
       reference.


       ITEM 12 - SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

       The  information  set forth under the  captions  "Security  Ownership  of
       Certain  Beneficial Owners and Management" and "Election of Directors" in
       BOK Financial's  1997 Annual Proxy  Statement is  incorporated  herein by
       reference.


       ITEM 13 - CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

       The information set forth under the caption "Certain Transactions" in BOK
       Financial's  1997  Annual  Proxy  Statement  is  incorporated  herein  by
       reference.

       The  information  set  forth  under  Notes  3,  5  and  9  of  "Notes  to
       Consolidated  Financial  Statements" (pages 29, 31, and 34, respectively)
       of BOK  Financial's  1997 Annual Report to  Shareholders  is incorporated
       herein by reference.

10
                                     PART IV

       ITEM 14 - EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

       (A)(1) LIST OF FINANCIAL STATEMENTS FILED.

       The  following   financial   statements  and  reports   included  in  BOK
       Financial's  Annual  Report to  Shareholders  for the  Fiscal  Year Ended
       December 31, 1997 are incorporated by reference in Parts I and II of this
       Annual Report on Form 10-K.

                               1997 Annual Report
                             Description Page Number

        Consolidated Selected Financial Data                                5

        Selected Quarterly Financial Data                                  12

        Report of Management on Financial Statements                       19

        Report of Independent Auditors                                     19

        Consolidated Statements of Earnings                                20

        Consolidated Balance Sheets                                        21

        Consolidated Statements of Changes in Shareholders' Equity      22-23

        Consolidated Statements of Cash Flows                              24

        Notes to Consolidated Financial Statements                      25-43

        Annual Financial Summary - Unaudited                            44-45

        Quarterly Financial Summary - Unaudited                         46-47

       (A)(2) List of Financial Statement Schedules filed.

       The  schedules  to the  consolidated  financial  statements  required  by
       Regulation  S-X are not required  under the related  instructions  or are
       inapplicable and are therefore omitted.

       (A)(3) LIST OF EXHIBITS FILED.

 Exhibit Number          Description of Exhibit

     3.0       The Articles of Incorporation  of BOK Financial,  incorporated by
               reference   to  (i)   Amended   and   Restated   Certificate   of
               Incorporation of BOK Financial filed with the Oklahoma  Secretary
               of  State  on  May  28,  1991,   filed  as  Exhibit  3.0  to  S-1
               Registration  Statement No. 33-90450, and (ii) Amendment attached
               as Exhibit A to Information  Statement and Prospectus  Supplement
               filed November 20, 1991.

      3.1      Bylaws of BOK Financial, incorporated by reference to Exhibit 3.1
               of S-1 Registration Statement No. 33-90450.

      4.0      The rights of the holders of the Common Stock and Preferred Stock
               of  BOK   Financial   are  set  forth  in  its   Certificate   of
               Incorporation.

     10.0      Purchase and Sale  Agreement  dated  October 25, 1990,  among BOK
               Financial,  Kaiser,  and the FDIC,  incorporated  by reference to
               Exhibit 2.0 of S-1 Registration Statement No. 33-90450.
11

     10.1      Amendment  to Purchase  and Sale  Agreement  effective  March 29,
               1991, among BOK Financial,  Kaiser, and the FDIC, incorporated by
               reference  to  Exhibit  2.2 of  S-1  Registration  Statement  No.
               33-90450

     10.2      Letter  agreement  dated  April 12,  1991,  among BOK  Financial,
               Kaiser, and the FDIC, incorporated by reference to Exhibit 2.3 of
               S-1 Registration Statement No. 33-90450.

     10.3      Second  Amendment to Purchase and Sale Agreement  effective April
               15, 1991, among BOK Financial, Kaiser, and the FDIC, incorporated
               by reference  to Exhibit 2.4 of S-1  Registration  Statement  No.
               33-90450.

     10.4      Employment agreements.

     10.4(a)   Employment  Agreement  between BOk and  Stanley A.  Lybarger,
               incorporated by reference to Exhibit 10.4(a) of Form 10-K for the
               fiscal year ended December 31, 1991.

     10.5      Director  indemnification  agreement dated June 30, 1987, between
               BOk and Kaiser,  incorporated by reference to Exhibit 10.5 of S-1
               Registration   Statement  No.  33-90450.   Substantially  similar
               director indemnification agreements were executed between BOk and
               the following:

                                                            Date of Agreement

                               James E. Barnes                June 30, 1987
                               William H. Bell                June 30, 1987
                               James S. Boese                 June 30, 1987
                               Dennis L. Brand                June 30, 1987
                               Chester E. Cadieux             June 30, 1987
                               William B. Cleary              June 30, 1987
                               Glenn A. Cox                   June 30, 1987
                               William E. Durrett             June 30, 1987
                               Leonard J. Eaton, Jr.          June 30, 1987
                               William B. Fader               December 5, 1990
                               Gregory J. Flanagan            June 30, 1987
                               Jerry L. Goodman               June 30, 1987
                               David A. Hentschel             July 7, 1987
                               Philip N. Hughes               July 8, 1987
                               Thomas J. Hughes, III          June 30, 1987
                               William G. Kerr                June 30, 1987
                               Philip C. Lauinger, Jr.        June 30, 1987
                               Stanley A. Lybarger            December 5, 1990
                               Patricia McGee Maino           June 30, 1987
                               Robert L. Parker, Sr.          June 30, 1987
                               James A. Robinson              June 30, 1987
                               William P. Sweich              June 30, 1987

     10.6      Capitalization  and Stock Purchase  Agreement dated May 20, 1991,
               between BOK  Financial and Kaiser,  incorporated  by reference to
               Exhibit 10.6 of S-1 Registration Statement No. 33-90450.

     10.7      BOK  Financial   Corporation  1991  Special  Stock  Option  Plan,
               incorporated  by  reference  to Exhibit  4.0 of S-8  Registration
               Statement No. 33-44122.

     10.7.1    BOK Financial Corporation 1992 Stock Option Plan,  incorporated
               by reference  to Exhibit 4.0 of S-8  Registration  Statement  No.
               33-55312.

     10.7.2    BOK Financial Corporation 1993 Stock Option Plan,  incorporated
               by reference  to Exhibit 4.0 of S-8  Registration  Statement  No.
               33-70102.

     10.7.3    BOK Financial Corporation 1994 Stock Option Plan,  incorporated
               by reference  to Exhibit 4.0 of S-8  Registration  Statement  No.
               33-79834.
12

     10.7.4    BOK Financial Corporation 1994 Stock Option Plan (Typographical
               Error Corrected  January 16, 1995),  incorporated by reference to
               Exhibit  10.7.4 of Form 10-K for the fiscal  year ended  December
               31, 1994.

     10.7.5    BOK Financial Corporation 1997 Stock Option Plan,  incorporated
               by reference  to Exhibit 4.0 of S-8  Registration  Statement  No.
               33-32642.

     10.7.6    BOK Financial  Corporation  Directors' Stock Compensation Plan,
               incorporated  by  reference  to Exhibit  4.0 of S-8  Registration
               Statement No. 33-79836.

     10.7.7    Bank of Oklahoma Thrift Plan (Amended and Restated Effective as
               of January 1, 1995),  incorporated by reference to Exhibit 10.7.6
               of Form 10-K for the year ended December 31, 1994.

     10.7.8    Trust  Agreement for the Bank of Oklahoma Thrift Plan (December
               30, 1994),  incorporated  by reference to Exhibit  10.7.7 of Form
               10-K for the year ended December 31, 1994.

     10.8      Lease Agreement between One Williams Center Co. and National Bank
               of Tulsa  (predecessor to BOk) dated June 18, 1974,  incorporated
               by reference to Exhibit 10.9 of S-1  Registration  Statement  No.
               33-90450.

     10.9      Lease Agreement between Security Capital Real Estate Fund and BOk
               dated January 1, 1988, incorporated by reference to Exhibit 10.10
               of S-1 Registration Statement No. 33-90450.

    10.10      Asset Purchase  Agreement (OREO and other assets) between BOk and
               Phi-Lea-Em  Corporation  dated April 30,  1991,  incorporated  by
               reference  to Exhibit  10.11 of S-1  Registration  Statement  No.
               33-90450.

     10.11     Asset Purchase  Agreement  (Tanker  Assets) between BOk and Green
               River Exploration  Company dated April 30, 1991,  incorporated by
               reference  to Exhibit  10.12 of S-1  Registration  Statement  No.
               33-90450.

     10.12     Asset  Purchase  Agreement  (Recovery  Rights)  between  BOk  and
               Kaiser dated April 30, 1991, incorporated by reference to Exhibit
               10.13 of S-1 Registration Statement No. 33-90450.

     10.13     Purchase  and  Assumption  Agreement  dated  August 7, 1992 among
               First Gibraltar Bank, FSB, Fourth Financial  Corporation and BOk,
               as amended,  incorporated  by reference to Exhibit  10.14 of Form
               10-K for the fiscal year ended December 31, 1992.

     10.13.1   Allocation  Agreement  dated  August 7, 1992  between BOk and
               Fourth  Financial  Corporation,   incorporated  by  reference  to
               Exhibit  10.14.1 of Form 10-K for the fiscal year ended  December
               31, 1992.

     10.14     Merger  Agreement  among BOK Financial,  BOKF Merger  Corporation
               Number Two,  Brookside  Bancshares,  Inc.,  The  Shareholders  of
               Brookside  Bancshares,   Inc.  and  Brookside  State  Bank  dated
               December  22,  1992,  as amended,  incorporated  by  reference to
               Exhibit 10.15 of Form 10-K for the fiscal year ended December 31,
               1992.

     10.14.1   Agreement to Merge between BOk and Brookside  State Bank dated
               January 27, 1993, incorporated by reference to Exhibit 10.15.1 of
               Form 10-K for the fiscal year ended December 31, 1992.

     10.15     Merger  Agreement  among BOK Financial,  BOKF Merger  Corporation
               Number Three, Sand Springs Bancshares,  Inc., The Shareholders of
               Sand Springs  Bancshares,  Inc. and Sand Springs State Bank dated
               December  22,  1992,  as amended,  incorporated  by  reference to
               Exhibit 10.16 of Form 10-K for the fiscal year ended December 31,
               1992.

     10.15.1   Agreement to Merge  between BOk and Sand  Springs  State Bank
               dated  January 27,  1993,  incorporated  by  reference to Exhibit
               10.16.1 of Form 10-K for the fiscal year ended December 31, 1992.
13

     10.16     Partnership Agreement between  Kaiser-Francis Oil Company and BOK
               Financial  dated December 1, 1992,  incorporated  by reference to
               Exhibit 10.16 of Form 10-K for the fiscal year ended December 31,
               1993.

     10.16.1   Amendment to Partnership Agreement between  Kaiser-Francis Oil
               Company and BOK  Financial  dated May 17, 1993,  incorporated  by
               reference  to Exhibit  10.16.1  of Form 10-K for the fiscal  year
               ended December 31, 1993.

     10.17     Purchase and Assumption  Agreement between BOk and FDIC, Receiver
               of Heartland  Federal Savings and Loan Association  dated October
               9, 1993,  incorporated by reference to Exhibit 10.17 of Form 10-K
               for the fiscal year ended December 31, 1993.

     10.18     Merger   Agreement   among  BOk,  Plaza  National  Bank  and  The
               Shareholders  of Plaza  National  Bank dated  December  20, 1993,
               incorporated  by reference to Exhibit  10.18 of Form 10-K for the
               fiscal year ended December 31, 1993.

     10.18.1   Amendment to Merger  Agreement  among BOk, Plaza National Bank
               and The  Shareholders  of Plaza  National  Bank dated January 14,
               1994,  incorporated  by reference to Exhibit 10.18.1 of Form 10-K
               for the fiscal year ended December 31, 1993.

     10.19     Stock Purchase  Agreement  between Texas Commerce Bank,  National
               Association  and  BOk  dated  March  11,  1994,  incorporated  by
               reference to Exhibit 10.19 of Form 10-K for the fiscal year ended
               December 31, 1993.

     10.20     Merger  Agreement  among BOK Financial  Corporation,  BOKF Merger
               Corporation  Number  Four,  Citizens  Holding  Company and others
               dated May 11, 1994, incorporated by reference to Exhibit 10.20 of
               Form 10-K for the fiscal year ended December 31, 1994.

     10.21     Stock  Purchase  and Merger  Agreement  among  Northwest  Bank of
               Enid,  BOk  and  The  Shareholders  of  Northwest  Bank  of  Enid
               effective  as of May  16,  1994,  incorporated  by  reference  to
               Exhibit 10.21 of Form 10-K for the fiscal year ended December 31,
               1994.

     10.22     Agreement  and Plan of Merger  among BOK  Financial  Corporation,
               BOKF Merger  Corporation  Number Five and Park Cities Bancshares,
               Inc. dated October 3, 1996,  incorporated by reference to Exhibit
               C of S-4 Registration Statement No. 333-16337.

     10.23     Agreement and Plan of Merger among BOK Financial  Corporation and
               First  TexCorp.,  Inc. dated December 18, 1996,  incorporated  by
               reference  to Exhibit  10.24 of S-4  Registration  Statement  No.
               333-16337.

     13.0      Annual Report to Shareholders  for the fiscal year ended December
               31, 1997.  Such report,  except for those portions  thereof which
               are  expressly  incorporated  by  reference  in this  filing,  is
               furnished for the information of the Commission and is not deemed
               to be "filed" as part of this Annual Report on Form 10-K.

     21.0      Subsidiaries of BOK Financial.

     23.0      Consent of independent auditors - Ernst & Young LLP.

     27.0      Financial Data Schedule for year ended December 31, 1997

     27.1      Restated Financial Data Schedules

     99.0      Additional Exhibits.

     99.1      Undertakings  incorporated  by  reference  into S-8  Registration
               Statement  No.  33-44121 for Bank of Oklahoma  Master Thrift Plan
               and Trust, incorporated by reference to Exhibit 99.1 of Form 10-K
               for the fiscal year ended December 31, 1993.

     99.2      Undertakings  incorporated  by  reference  into S-8  Registration
               Statement No. 33-44122 for BOK Financial Corporation 1991 Special
               Stock Option Plan,  incorporated  by reference to Exhibit 99.2 of
               Form 10-K for the fiscal year ended December 31, 1993.

     99.3      Undertakings  incorporated  by  reference  into S-8  Registration
               Statement No. 33-55312 for BOK Financial  Corporation  1992 Stock
               Option  Plan,  incorporated  by reference to Exhibit 99.3 of Form
               10-K for the fiscal year ended December 31, 1993.
14

     99.4      Undertakings  incorporated  by  reference  into S-8  Registration
               Statement No. 33-70102 for BOK Financial  Corporation  1993 Stock
               Option  Plan,  incorporated  by reference to Exhibit 99.4 of Form
               10-K for the fiscal year ended December 31, 1993.

     99.5      Undertakings  incorporated  by  reference  into S-8  Registration
               Statement No. 33-79834 for BOK Financial  Corporation  1994 Stock
               Option  Plan,  incorporated  by reference to Exhibit 99.5 of Form
               10-K for the fiscal year ended December 31, 1994.

     99.6      Undertakings  incorporated  by  reference  into S-8  Registration
               Statement No. 33-79836 for BOK Financial  Corporation  Directors'
               Stock  Compensation  Plan,  incorporated  by reference to Exhibit
               99.6 of Form 10-K for the fiscal year ended December 31, 1994.

     99.7      Unertakings  incorporated  by  reference  into  S-8  Registration
               Statement No. 33-32642 for BOK financial  Corporation  1997 Stock
               Option  Plan,  Incorporated  by reference to Exhibit 99.7 of Form
               10-K for the fiscal year ended December 31, 1997.

       (B) REPORTS ON FORM 8-K

       None.

       (C) EXHIBITS REQUIRED BY ITEM 601 OF REGULATION S-K

       The  exhibits  listed in response to Item  14(A)(3)  are filed as part of
       this report.

       (D) FINANCIAL STATEMENT SCHEDULES

       None.


15

                                   SIGNATURES

Pursuant to the  requirements  of Section 13 and 15(d) of the  Securities
Exchange Act of 1934,  the  Registrant  has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.

                                       BOK FINANCIAL CORPORATION

DATE: March 23, 1998                BY: /s/George B. Kaiser
                                       ----------------------------------
                                       George B. Kaiser,
                                       Chairman of the Board of Directors

Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below on March 23, 1998 , by the following persons
on behalf of the Registrant and in the capacities indicated.

OFFICERS
/s/ George B. Kaiser                        /s/ Stanley A. Lybarger
- ---------------------------------           -----------------------------
George B. Kaiser,                           Stanley A. Lybarger,
Chairman of the Board of Directors          Director, President and Chief
                                            Executive Officer

/s/ James A. White                          /s/ John C. Morrow
- ---------------------------------           -----------------------------
James A. White,                             John C. Morrow
Executive Vice President and                Senior Vice President and
Chief Financial Officer/Treasurer           Controller, Financial Accounting

DIRECTORS

                                        /s/ Robert J. LaFortune
 -----------------------------------  ----------------------------------------
 W. Wayne Allen                       Robert J. LaFortune

 /s/ Keith E. Bailey                    /s/ Philip C. Lauinger, Jr.
 -----------------------------------  ----------------------------------------
 Keith E. Bailey                      Philip C. Lauinger, Jr.

                                        /s/ David R. Lopez
 -----------------------------------  ----------------------------------------
 James E. Barnes                      David R. Lopez

  /s/ Sharon J. Bell                    /s/ Frank A. McPherson
  ----------------------------------   ---------------------------------------
 Sharon J. Bell                       Frank A. McPherson

  /s/ Glenn A. Cox
 -----------------------------------  ----------------------------------------
 Glenn A. Cox                         J. Larry Nichols

  /s/ Nancy J. Davies                   /s/ Robert L. Parker, Sr.
 -----------------------------------  ----------------------------------------
 Nancy J. Davies                      Robert L. Parker, Sr.


  ----------------------------------   ----------------------------------------
 Robert H. Donaldson                  James W. Pielsticker


  ----------------------------------   ----------------------------------------
 William E. Durrett                   E.C. Richards

                                        /s/ James A. Robinson
  ----------------------------------   ----------------------------------------
 James O. Goodwin                     James A. Robinson

  /s/ V. Burns Hargis                   /s/ L. Francis Rooney, III
  ----------------------------------   ----------------------------------------
 V. Burns Hargis                      L. Francis Rooney, III

  /s/ E. Carey Joullian, IV             /s/ Robert L. Zemanek
  ----------------------------------   ----------------------------------------
 E. Carey Joullian, IV                 Robert L. Zemanek